Immunohistochemical characterization of the extracellular matrix in normal mitral valves and in chronic valve disease (endocardiosis) in dogs
| Autor: | Heinz-Adolf Schoon, Alexander Kappe, I. März, Birgit Kiefer, Heike Aupperle, Jens Thielebein |
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| Rok vydání: | 2009 |
| Předmět: |
Pathology
medicine.medical_specialty Heart Valve Diseases Extracellular matrix Dogs Species Specificity Reference Values Laminin Mitral valve medicine Animals Dog Diseases Heart valve Basement membrane Endocarditis General Veterinary biology Chemistry Heart Valves Immunohistochemistry Extracellular Matrix Fibronectin medicine.anatomical_structure biology.protein Mitral Valve Proteoglycans Collagen Elastin Cell Division |
| Zdroj: | Research in Veterinary Science. 87:277-283 |
| ISSN: | 0034-5288 |
| Popis: | This study aimed to characterize the composition and distribution of the extracellular matrix (ECM) components in normal canine mitral valves (MV) and in chronic heart valve disease (CVD). MV of 50 dogs (normal (n = 9), mild (n = 13), moderate (n = 17), severe (n = 11) CVD) were investigated macroscopically, histologically (H.-E., picrosirius red) and immunohistochemically (collagen I, III, IV, V, VI, elastin, laminin, fibronectin, heparan sulphate). In normal MV, ECM components were expressed in a typical layered pattern. In mild CVD, basement membrane components (laminin, collagen IV, fibronectin) were increased. Advanced CVD was characterized by myxomatous nodular lesions displaying a marginal and a central region comprised mainly of collagen I, VI and fibronectin in the former and collagen I and III in the latter. Collagen IV and laminin appeared multifocally in marked CVD. In conclusion, not only an accumulation of proteoglycans, but also a distinctly altered expression of basement membrane components, and collagens characterizes CVD. |
| Databáze: | OpenAIRE |
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